Reflective Illumination Layout for Uniform Inspection Lighting
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Solution Overview
Problem
Current illumination devices face challenges in reducing luminance unevenness when irradiating targets, leading to suboptimal image clarity in inspection and observation processes.
Innovation Solution
The proposed solution involves an illumination device with a light source module and a light reflective member, where the light sources emit both high and low luminance light, and the reflective surfaces are strategically positioned to condense these lights at specific points, reducing luminance unevenness by adjusting the optical path lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single reflective surface is used to reflect light from sources, then the device structure is simple, but luminance unevenness occurs in the irradiated light
Solution Approach 1:
The reflective surface is divided into multiple reflective surfaces (first reflective surface and second reflective surface) positioned at different locations. Each reflective surface reflects light from specific light sources, segmenting the illumination function to achieve uniform luminance distribution across the irradiated area.
Solution Approach 2:
Different reflective surfaces are assigned to reflect light from different light sources based on their local positions and functions. The first reflective surface reflects light from first light sources while the second reflective surface reflects light from second light sources, creating localized optimization that results in overall uniform illumination.
2Illumination intensity
If light sources are arranged to provide uniform illumination, then luminance unevenness is reduced, but the device structure becomes more complex
Solution Approach 1:
Multiple reflective surfaces are integrated into a single light reflective member that is coupled to the substrate. This merging approach combines the functions of multiple reflective surfaces while maintaining a relatively simple overall structure, reducing luminance unevenness without proportionally increasing device complexity.
Solution Approach 2:
The light reflective member acts as an intermediary component between the light sources and the irradiation target. It mediates the light distribution by using multiple reflective surfaces to redirect light from different sources, achieving uniform illumination while keeping the light source arrangement relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces luminance unevenness, ensuring a more uniform and consistent illumination, which enhances image clarity and observation quality.
Implementation Method 1
a light reflective member having a reflective surface configured to reflect the light emitted from each of the plurality of light sources
Implementation Method 2
the first light reflected by the first reflective surface and the second light reflected by the second reflective surface are condensed at a condensing point located on the first surface side of the substrate
Data Source
AI summary
An illumination device includes a light source module and a light reflective member. The light source module includes a substrate having a first surface and a plurality of light sources thereon, each light source emitting light including first light and second light having luminance lower than the first light. The light reflective member is disposed on a first surface side of the substrate and has a reflective surface. The reflective surface includes a first reflective surface to reflect the first light and a second reflective surface to reflect the second light. The second reflective surface is closer to the substrate than the first reflective surface is. Of the light emitted from one light source of the light sources, the first light reflected by the first reflective surface and the second light reflected by the second reflective surface are condensed at a condensing point located on the first surface side.